CN110022515A - Electronic equipment and its control method - Google Patents
Electronic equipment and its control method Download PDFInfo
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- CN110022515A CN110022515A CN201910365254.6A CN201910365254A CN110022515A CN 110022515 A CN110022515 A CN 110022515A CN 201910365254 A CN201910365254 A CN 201910365254A CN 110022515 A CN110022515 A CN 110022515A
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- loudspeaker
- broadcasting content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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Abstract
Provide a kind of electronic equipment and its control method, wherein the control method can include: judge whether to need to limit the power of loudspeaker of electronic equipment according to the ambient temperature value of the battery parameter value of electronic equipment and/or electronic equipment；When needing limiting loudspeaker power, according to broadcasting content, limiting loudspeaker power.According to the disclosure, by limiting power of loudspeaker, can be reduced or avoided the electronic equipments such as mobile phone loudspeaker issue desultory sound the phenomenon that, guarantee the normal work of loudspeaker.
Description
Technical field
All things considered of the present invention is related to field of electronic device, more particularly, is related to a kind of electronic equipment and its controlling party
Method.
Background technique
In order to meet the demand of the loudspeaker to big volume, it is possible to increase the power of the power amplifier of loudspeaker.However, even if
The power of the power amplifier of loudspeaker is increased, loudspeaker is also possible to that desultory sound (i.e. discontinuous sound can be issued
Sound).Loudspeaker issues the reason of desultory sound can include: to loudspeaker (for example, the power amplifier of loudspeaker, abbreviation
For power amplifier) power supply battery internal resistance increase.When temperature is lower than specific temperature, internal resistance increase can lead to.When increase loudspeaker
Volume and the internal resistance of cell increase when, power amplifier output electric current increase, power amplifier input terminal generate significantly pressure drop, cause
Voltage of PA is insufficient, so that loudspeaker issues desultory sound.
In the related art, a kind of method for the low-temperature working performance improving loudspeaker includes: control battery in low temperature
Operating voltage with improve battery work stability.This method the problem is that: in low temperature, the internal resistance of cell can increase,
But in which case it is difficult to control the internal resistance of cell, it is especially difficult to decrease the internal resistance of cell.For example, in room temperature (for example, 20
DEG C) when, the internal resistance of cell is 0.1 Ω, and at -20 DEG C, the internal resistance of cell is up to 0.9 Ω.At -20 DEG C, due to the internal resistance of cell
Increasing, the power amplifier voltage for causing battery to be output to loudspeaker is insufficient (i.e. lower than the voltage for working normally loudspeaker), and by
In the reason for the power amplifier voltage deficiency for being output to loudspeaker, loudspeaker will export desultory sound.
The method that another kind improves the low-temperature working performance of loudspeaker includes: to reduce the volume of loudspeaker.This method exists
The problem of be: cell phone manufacturer be provided with for speaker volume strict standard, lead to not reduce loudspeaker volume；Even if
The volume of loudspeaker can be reduced, speaker volume reduction can also reduce user experience, and user can not hear bell at low temperatures
Sound or music etc..
In view of various problems existing in the prior art, it is desirable to provide a kind of loudspeaking for effectively reducing the electronic equipments such as mobile phone
Device issues the phenomenon that desultory sound, the method to guarantee the normal work of loudspeaker.
Summary of the invention
In the present invention, it is contemplated that the normal work of the loudspeaker of electronic equipments such as mobile phone with battery is easy by electricity
The influence of pond parameter and/or environment temperature, and volume needed for different broadcasting contents is different, provides a kind of electronic equipment
And its control method.
According to an exemplary embodiment of the present disclosure, the control method of a kind of electronic equipment is provided, wherein the controlling party
Method includes: to judge whether to need to limit electronics according to the battery parameter value of electronic equipment and/or the ambient temperature value of electronic equipment
The power of loudspeaker of equipment；When needing limiting loudspeaker power, according to broadcasting content, limiting loudspeaker power.
Optionally, battery parameter value includes: internal resistance of cell value, battery temperature value, cell output value, and/or battery
Internal consumption performance number, and/or,
Broadcasting content includes: the content of announcement of voice content, multimedia content, and/or electronic equipment, and/or,
Judge whether that the step of needing limiting loudspeaker power includes: to work as according to battery parameter value and/or ambient temperature value
When the variation of battery parameter value is lower than predetermined temperature value more than predetermined variation value and/or battery temperature value or ambient temperature value, sentence
It is disconnected whether to need limiting loudspeaker power, and/or determining one with battery parameter value, ambient temperature value and battery temperature value
Corresponding limitation output volume；Judge whether the broadcast sound volume of currently playing content is reached and a corresponding limitation
Output volume；When reaching limitation output volume corresponding with described one, judge to need limiting loudspeaker power, and/or,
According to broadcasting content, the step of limiting loudspeaker power includes: to change the frequency response for being directed to broadcasting content；With/
Or dynamic range compression is carried out for broadcasting content, and/or,
According to broadcasting content, the step of limiting loudspeaker power further include: the boosting of the power amplifier of mute speaker
Module, and/or when battery voltage value is not within the scope of scheduled voltage, increase the limited amplitude of power of loudspeaker, and/or,
The control method further include: with predetermined time interval, detect described one, and/or when described one default
Normal range (NR) in when, stop power of loudspeaker limitation.
Optionally, changing the step of frequency response for being directed to broadcasting content includes: reduction broadcasting content in first frequency
Frequency response in range, and/or the frequency response within the scope of second frequency of broadcasting content is improved, and/or filter out broadcasting
The audio signal in third frequency range of content, and/or,
The step of carrying out dynamic range compression for broadcasting content includes: the dynamic model for compressing the audio signal of broadcasting content
It encloses, and/or,
The step of stopping power of loudspeaker limitation includes: the frequency response for restoring to be directed to broadcasting content, and/or stops being directed to
The dynamic range compression of broadcasting content, and/or open the boost module of the power amplifier of loudspeaker.
Optionally, change the step of frequency response for being directed to broadcasting content further include: while changing frequency response, make
The output volume of broadcasting content remains unchanged, and/or changes degree ratio for big electricity for the frequency response of baby battery temperature value
The frequency response change degree of pond temperature value is big, and/or changes journey using the frequency response in multiple frequency response change schemes
The smallest scheme is spent, and/or,
The step of carrying out dynamic range compression for broadcasting content further include: while carrying out dynamic range compression, make
The output volume of broadcasting content remains unchanged, and/or is directed to big electricity for the dynamic range compression degree ratio of baby battery temperature value
The dynamic range compression degree of pond temperature value is big, and/or,
First frequency range is less than 1 kHz, and second frequency range is greater than or equal to 3 kHz and is less than or equal to
8 kHz and/or third frequency range are less than 1 kHz.
According to the another exemplary embodiment of the disclosure, providing a kind of includes at least one computing device and at least one
The system of the storage device of store instruction, wherein described instruction promotes described when being run by least one described computing device
At least one computing device executes control method as described above.
According to the another exemplary embodiment of the disclosure, a kind of computer readable storage medium of store instruction is provided,
Wherein, when described instruction is run by least one computing device, at least one described computing device is promoted to execute as described above
Control method.
According to the another exemplary embodiment of the disclosure, a kind of electronic equipment is provided, wherein the electronic equipment packet
It includes: judging unit, for judging whether needs according to the battery parameter value of electronic equipment and/or the ambient temperature value of electronic equipment
Limit the power of loudspeaker of electronic equipment；Power limiting unit, for when needing limiting loudspeaker power, according in broadcasting
Hold, limiting loudspeaker power.
Optionally, battery parameter value includes: internal resistance of cell value, battery temperature value, cell output value, and/or battery
Internal consumption performance number, and/or,
Broadcasting content includes: the content of announcement of voice content, multimedia content, and/or electronic equipment, and/or,
Whether the judging unit needs limiting loudspeaker power by following operation judges: when the variation of battery parameter value
When being lower than predetermined temperature value more than predetermined variation value and/or battery temperature value or ambient temperature value, judge whether to need to limit to raise
Sound device power, and/or, it determines and is exported with a corresponding limitation in battery parameter value, ambient temperature value and battery temperature value
Volume；Judge whether reach limitation output volume corresponding with described one for the broadcast sound volume of currently playing content；When reaching
When to limitation output volume corresponding with described one, judge to need limiting loudspeaker power, and/or,
The power limiting unit by operating limiting loudspeaker power as follows: the frequency changed for broadcasting content is rung
It answers；And/or dynamic range compression is carried out for broadcasting content, and/or,
The power limiting unit is also used to: the boost module of the power amplifier of mute speaker, and/or when battery electricity
When pressure value is not within the scope of scheduled voltage, increase the limited amplitude of power of loudspeaker, and/or,
The electronic equipment further include: detection unit, for predetermined time interval, detecting described one and/or described
Power limiting unit is also used to, and when described one in preset normal range (NR), stops power of loudspeaker limitation.
Optionally, the power limiting unit is directed to the frequency response of broadcasting content by following operation change: reduction is broadcast
The frequency response within the scope of first frequency of content is put, and/or improves the frequency within the scope of second frequency of broadcasting content
Response, and/or the audio signal in third frequency range of broadcasting content is filtered out, and/or,
The power limiting unit carries out dynamic range compression by operation as follows: compressing the audio signal of broadcasting content
Dynamic range, and/or,
The power limiting unit stops power of loudspeaker limitation by behaviour as follows: restoring to ring for the frequency of broadcasting content
It answers, and/or stops the dynamic range compression for being directed to broadcasting content, and/or open the boost module of the power amplifier of loudspeaker.
Optionally, the power limiting unit is also used to: while changing frequency response, making the output sound of broadcasting content
Amount remains unchanged, and/or changes degree than the frequency sound for big battery temperature value for the frequency response of baby battery temperature value
It should change that degree is big, and/or change the smallest scheme of degree using the frequency response in multiple frequency response change schemes, and/
Or,
The power limiting unit is also used to: while carrying out dynamic range compression, making the output volume of broadcasting content
It remains unchanged, and/or is directed to the dynamic range of big battery temperature value greatly for the dynamic range compression degree of baby battery temperature value
Compression degree is big, and/or,
First frequency range is less than 1 kHz, and second frequency range is greater than or equal to 3 kHz and is less than or equal to
8 kHz and/or third frequency range are less than 1 kHz.
In the disclosure, it is contemplated that the factor that the loudspeaker of a variety of electronic equipments for influencing setting battery works normally.Example
Such as, at low temperatures (for example, in -20 DEG C of situations below), internal resistance of cell value can increase electronic equipment, so as to cause raising
The interrupted broadcasting sound of sound device.For another example, in battery after multiple charging-discharging cycles, the internal resistance of cell can also be increased, so as to cause
The interrupted broadcasting sound of loudspeaker.In another example the interrupted broadcasting of loudspeaker can occur when volume is persistently increased to critical volume
The phenomenon that, demand of the different broadcasting contents to sound is different (for example, the volume that multimedia content needs may be than electricity such as the tinkle of bells
The volume that the content of announcement of sub- equipment needs is high), in fact it could happen that it plays multimedia content and the interrupted broadcasting of loudspeaker does not occur
The phenomenon that, but play the content of announcement but broadcasting interrupted there is a phenomenon where loudspeaker.
Therefore, judge whether to need to limit according to the ambient temperature value of the battery parameter value of electronic equipment and/or electronic equipment
The power of loudspeaker of electronic equipment processed；When needing limiting loudspeaker power, according to broadcasting content, limiting loudspeaker power.?
In this case, power of loudspeaker limitation can be carried out according to broadcasting content, so that more efficient prevent loudspeaker sending from continuing absolutely
Continuous sound, to guarantee the normal work of loudspeaker.
Part in following description is illustrated into the other aspect and/or advantage of present general inventive concept, there are also one
Dividing will be apparent by description, or can learn by the implementation of present general inventive concept.
Detailed description of the invention
By below with reference to be exemplarily illustrated embodiment attached drawing carry out description, exemplary embodiment of the present it is upper
Stating will become apparent with other purposes and feature, in which:
Fig. 1 shows the flow chart of the control method of electronic equipment according to the exemplary embodiment of the disclosure；
Fig. 2 shows battery equivalent circuits according to the exemplary embodiment of the disclosure；
Fig. 3 and Fig. 4 shows the circuit diagram of the measurement internal resistance of cell according to the exemplary embodiment of the disclosure；
Fig. 5 shows the circuit diagram of the measurement battery parameter according to the another exemplary embodiment of the disclosure；
Fig. 6 shows the schematic diagram of the method for the loudspeaker of controlling electronic devices according to the exemplary embodiment of the disclosure；
Fig. 7 shows curve graph according to the exemplary embodiment of the disclosure；
Fig. 8 shows the curve graph of the another exemplary embodiment according to the disclosure；
Fig. 9 shows curve graph corresponding with multiple parameters according to the exemplary embodiment of the disclosure；
Figure 10 shows the flow chart of control method according to the exemplary embodiment of the disclosure；
Figure 11 shows the block diagram of electronic equipment according to the exemplary embodiment of the disclosure.
Specific embodiment
It reference will now be made in detail the embodiment of the present invention, examples of the embodiments are shown in the accompanying drawings, wherein identical mark
Number identical component is referred to always.It will illustrate the embodiment, by referring to accompanying drawing below to explain the present invention.
Fig. 1 shows the flow chart of the control method of electronic equipment according to the exemplary embodiment of the disclosure.Such as Fig. 1 institute
Show, control method according to the exemplary embodiment of the disclosure may include step S110 and step S120.In step S110, according to
The battery parameter value of electronic equipment and/or the ambient temperature value of electronic equipment judge whether to need to limit the loudspeaker of electronic equipment
Power；In step S120, when needing limiting loudspeaker power, according to broadcasting content, limiting loudspeaker power.
As an example, battery parameter value can include: internal resistance of cell value, battery temperature value, cell output value, and/or
Inside battery consumes performance number.
As an example, when the variation of battery parameter value is more than predetermined variation value and/or battery temperature value or ambient temperature value
When lower than predetermined temperature value, judge whether to need limiting loudspeaker power.
As an example, internal resistance of cell value, battery temperature value, cell output value and electricity can be measured by a variety of methods
Pond internal consumption performance number.For example, internal resistance of cell value can be measured to the method shown in Fig. 4 according to fig. 2.
Fig. 2 shows battery equivalent circuit diagrams according to the exemplary embodiment of the disclosure；Fig. 3 and Fig. 4 are shown according to this public affairs
The exemplary embodiment opened is the circuit diagram outside battery equivalent circuit diagram after connecting resistance.
Referring to Fig. 2, battery according to the exemplary embodiment of the disclosure can be equivalent to the internal resistance that value is r and be with electromotive force value
E0The concatenated circuit of the ideal source power supply of power loss (negligible).It, can be equivalent for power supply shown in Fig. 2 referring to Fig. 3 and Fig. 4
The outer connecting resistance of circuit in parallel and voltmeter, wherein resistance value is that the outer connecting resistance of R is connected with switch K.Make out when as shown in Figure 3
When closing K disconnection, the voltage V1 of internal resistance can be measured by voltmeter.When being closed switch K as shown in Figure 4, electricity can be passed through
Pressure table measures the voltage V2 of outer connecting resistance, at this time, it will be assumed that the size for flowing through the electric current of outer connecting resistance is I.According to fig. 2 to figure
4, it can get following formula:
I × r=V1-V2,
V2=I × R.
According to formula as above, the size of internal resistance can get are as follows: r=(V1/V2-1) × R.
The foregoing describe according to fig. 2 to the method that Fig. 4 carries out internal resistance measurement to the indeclinable battery of internal resistance size r.May be used also
Circuit carries out internal resistance measurement to the resistance of internal resistance size variation according to Fig.5,.
Referring to Fig. 5, battery can be equivalent to the series circuit for the internal resistance that the ideal source that voltage is V0 and internal resistance value are r.?
In circuit shown in Fig. 5, ideal source, the internal resistance of cell, the outer connecting resistance that resistance value is R and circuit load are (for example, mobile phone circuit
Load) RL series connection.When temperature reduces (for example, being equal to or less than -20 DEG C) to a certain extent, internal resistance value r can be increased.It can
Battery output voltage value V1 is measured, also can measure voltage value V2 (the external electricity after the outer connecting resistance that series connection resistance value is R
The voltage drop of resistance).At this point, can be by calculating i1=(V2-V1)/R calculates cell output current, and passes through
Calculate cell output value P.
When the handset is on standby, it is equivalent to and is not connected to outer connecting resistance and circuit load, can measure battery output voltage V1',
This is approximately equal to inside battery voltage, can pass through r=(V as a result,1’-V1)/i1Internal resistance of cell value is calculated, can also be passed throughIt calculates inside battery and consumes performance number.
In addition, battery temperature value can be obtained by the equipment such as sensor (for example, thermistor (temperature) sensor) or other methods
And/or the ambient temperature value of electronic equipment.As described above, can get at least one of various battery parameters.On this basis,
At least one battery parameter value of acquisition can be compared with predetermined threshold to judge whether to need to limit raising for electronic equipment
Sound device power, and/or the battery temperature value of acquisition or ambient temperature value are compared with predetermined temperature threshold to judge whether
Need to limit the power of loudspeaker of electronic equipment.
Specifically, when at least one battery parameter value is below or above predetermined threshold or battery temperature value or environment temperature
It when value is lower than predetermined temperature threshold, can determine whether out to need limiting loudspeaker power, for example, when battery temperature value is lower than 0 DEG C or -20
DEG C when, can determine whether out to need limiting loudspeaker power, for another example, when ambient temperature value be lower than -20 DEG C when, can determine whether out to need to limit
Power of loudspeaker.In addition, can also be according to limitation output volume to determine whether needing limiting loudspeaker power.
Fig. 6 shows the schematic diagram of the method for the loudspeaker of control resistance equipment according to the exemplary embodiment of the disclosure.
As shown in fig. 6, can by be reduced to speaker amplifier (SPK AMP) power supply battery (Battery) internal resistance
The broadcast performance of (impedance) Lai Gaishan loudspeaker (SPK), can also be executed by audio processor (AP) reduces volume, changes frequency
Dynamic range compression (Dynamic Range Compression, DRC) is responded and/or executed to control SPK AMP (referred to as
AMP), to improve the broadcast performance of SPK.
As an example, can determine and a corresponding limitation in battery parameter value, ambient temperature value and battery temperature value
Output volume；Judge whether reach limitation output volume corresponding with described one for the broadcast sound volume of currently playing content；
When reaching limitation output volume corresponding with described one, judge to need limiting loudspeaker power.
It is described below and how to determine limitation output volume.In the mistake for determining limitation output volume corresponding with internal resistance of cell value
Cheng Zhong, be output to power amplifier AMP audio signal be it is known, the gain of AMP setting is known, loudspeaker electro-acoustic
Transfer characteristic is known, then, the volume of loudspeaker SPK output can be determined by the digital volume in input signal.
For example, international standard ITU-R BS.1770-4 (Algorithms to measure audio program
Loudness and true-peak audio level, for measuring the calculation of audio program's loudness and real peak value audio level
Method) give the calculation method in digital mono road, multichannel volume.We can estimate single loudspeaker according to the calculation method
And the overall loudness of loudspeaker and the two-channel system of receiver composition.
Limitation output volume can be determined based on Fig. 5, specifically, the case where can increasing by adjusting R simulated battery internal resistance.
In each R value, the signal volume of adjustable loudspeaker measures volume when audio discontinuity occurring just and is denoted as limitation output
Volume.
When with the other parameters except internal resistance of cell r (for example, battery temperature value, cell output value, inside battery disappear
Consumption performance number, ambient temperature value etc.) criterion is used as similar measurement can also be carried out when determining limitation output volume.
For example, when determining the corresponding limitation output volume of different battery temperatures, since temperature reduction can be such that battery exports
Power decline, and then cause the fan-out capability decline of the power amplifier of loudspeaker, therefore can measure different temperatures or humidity province
Between the corresponding lucky volume that discontinuously plays of occurring as limitation output volume.The measurement of temperature can be used temperature sensor real
It is existing.
It in actual use, can be according to broadcasting content, limiting loudspeaker power, for example, the scene according to locating for current user
Mode determines which kind of limitation output power scheme used, specifically, when actually using loudspeaker, it can be square as described above
Method real-time measurement battery parameter and/or sensor temperature (environment temperature or internal temperature of battery).When battery parameter and/or sensing
When device temperature falls into protection scope, according to broadcasting content, limiting loudspeaker power, for example, taking by different application
Different audio adjustable strategies (power of loudspeaker restriction strategy).
As an example, broadcasting content includes: the content of announcement of voice content, multimedia content, and/or electronic equipment.Language
Sound content may include voice hand-free call content, voice content in video calling etc., and multimedia content may include the electricity played
Shadow content, music (MP3) content etc., the content of announcement of electronic equipment may include that the tinkle of bells, Call Waiting sound, busy tone, short message are logical
Bosom friend etc..
As an example, according to broadcasting content, the step of limiting loudspeaker power includes: to change the frequency for being directed to broadcasting content
Response；And/or dynamic range compression is carried out for broadcasting content.
As an example, the step of changing the frequency response for being directed to broadcasting content includes: reduction broadcasting content in the first frequency
Frequency response within the scope of rate, and/or the frequency response within the scope of second frequency of broadcasting content is improved, and/or filter out and broadcast
Put the audio signal in third frequency range of content.
As an example, first frequency range is less than 1 kHz, second frequency range be greater than or equal to 3 kHz and
1 kHz is less than less than or equal to 8 kHz and/or third frequency range.
As an example, the step of changing the frequency response for being directed to broadcasting content further include: while changing frequency response,
The output volume of broadcasting content is remained unchanged, and/or changes degree ratio for big for the frequency response of baby battery temperature value
The frequency response change degree of battery temperature value is big, and/or is changed using the frequency response in multiple frequency response change schemes
The smallest scheme of degree.
As an example, the step of carrying out dynamic range compression for broadcasting content includes: the audio letter for compressing broadcasting content
Number dynamic range.
As an example, the step of carrying out dynamic range compression for broadcasting content further include: carrying out dynamic range compression
While, remain unchanged the output volume of broadcasting content, and/or for the dynamic range compression degree ratio of baby battery temperature value
It is big for the dynamic range compression degree of big battery temperature value.
As an example, according to broadcasting content, the step of limiting loudspeaker power further include: the power amplification of mute speaker
The boost module of device, and/or when battery voltage value is not within the scope of scheduled voltage, increase the limitation width of power of loudspeaker
Degree, and/or, with predetermined time interval, one in battery parameter value, ambient temperature value and battery temperature value is detected, and/or work as
Described one within the scope of preset normal parameter values when, stop power of loudspeaker limitation.
As an example, the step of stopping power of loudspeaker limitation includes: the frequency response (example for restoring to be directed to broadcasting content
Such as, frequency response is reverted into the state before frequency response is changed), and/or, stop the dynamic range pressure for being directed to broadcasting content
Contracting, and/or, open the boost module of the power amplifier of loudspeaker, and/or stop filtering out broadcasting content in third frequency model
Enclose interior audio signal.
Specifically, frequency response song can be changed by applying balanced device for voice hand-free call and video calling
Line to reduce the frequency response of 1kHz or less low frequency part, and/or improves 3kHz~8KHz high frequency section (for example, narrow band signal
Need to apply audio band extension, supplement high frequency section signal) frequency response.In this way it can be ensured that the reduction of low frequency volume is same
Shi Tisheng clarity maintains the loudness (i.e. maintenance volume is constant, changes tone color) of adjustment front and back.Under extreme case, function can be closed
Internal boost module is put to maintain basic function, reaching can ring, but the effect that volume is small.
For playing the contents such as film and music, dynamic range compressor can be used to carry out dynamic range compression (i.e.
Change DRC algorithm parameter), with the dynamic range of compressed media content, meets volume and (tieed up less than or equal to limitation output volume
It is constant to hold volume, changes sound quality).Under extreme case, the boost module inside stereo power amplifier can be closed to maintain basic function,
Reaching can ring, but the effect that volume is small.
For contents such as the tinkle of bells and short massage notices, dynamic range compressor can be used to carry out dynamic range compression to the tinkle of bells
(i.e. change DRC algorithm parameter) then can be used balanced device (i.e. change frequency response curve) and reduce the tinkle of bells bandwidth.Extreme feelings
Under condition, the boost module that can close inside power amplifier is simultaneously switched to particular ringtone to maintain basic function, and reaching can ring, but volume is small
Effect.
As an example, can determine whether to continue to limit or increase limitation after limiting limiting loudspeaker power
Amplitude.Cell voltage decline situation can be monitored as whether increasing the criterion of power limit amplitude.For example, can be by limiting loudspeaker
Voltage before and after power is compared, or is judged according to the voltage after limiting loudspeaker power, if (limit is opened in protection
Power of loudspeaker processed) cell voltage is still unable to satisfy requirement (for example, reaching required voltage value) in a period of time afterwards, then into one
The big parameter of step (DRC algorithm parameter) is to reduce the current drain of loudspeaker power amplifier.
According to an exemplary embodiment of the present disclosure, the mode limiting loudspeaker power of adjustment parametric equalizer can be used.
Specifically, since sensitivity of the human ear to sound is that low frequency is on the weak side, the sensitivity level of about 1kHz~6kHz
Height, higher frequency sensitivity die down again, and make the signal width of sensitizing range (within the scope of the high 1kHz~6kHz of sensitivity level)
Degree, which promotes 1dB ratio, keeps the signal amplitude reduction 1dB bring amplitude variable quantity in non-sensitive area small or even much smaller, therefore utilizes
Such characteristic can reduce the output amplitude of power amplifier in the case where loudness does not change.
It is arranged in the digital signal processor (Digital Signal Processor, DSP) or audio processor of mobile phone
Multiple groups audio frequency parameter, on this basis, referring to Fig. 7, frequency response curve setting method is as follows: normal (room temperature) mode (NOT function
Rate unrestricted model) normal frequency response curve (room temperature frequency response curve) is corresponded to, which corresponds to melodious audio；Power limit
Mode corresponds to low temperature frequency response curve, wherein low-frequency gain is lowered, and high-frequency gain is correspondingly increased, for example, low frequency is average
4dB is reduced, high-frequency average improves 4dB；Room temperature frequency response curve and low temperature frequency response curve correspond to same source of sound, calculate
Volume out is identical.
According to an exemplary embodiment of the present disclosure, the mode limiting loudspeaker function of adjustment dynamic range compression parameter can be used
Rate.
Specifically, the dynamic range for capableing of received audio for human ear is also understood that and (listens when pressurised
To).For example, although sound quality declines, still being able to be understood if carrying out amplitude limiting processing to one section of voice signal.Another party
Face, so that minimum signal (amplitude is small to arrive certain value) is decayed, small signal (the small signal of amplitude) is amplified for the compression of dynamic range,
Big signal (the big signal of amplitude) is reduced, however, volume (subjective sense of hearing volume) is increased in sense of hearing.Pass through dynamic
The subjective sense of hearing volume that Ratage Coutpressioit improves be reduced signal overall loudness still can.For the sound in ringing sound of cell phone, video display
Frequently, music content etc., usual dynamic range is very big, has and more redundantly carries out dynamic range compression, so as to pass through sound quality slightly
It edges down and low exchanges low output power consumption for.
Fig. 8 shows the curve graph according to the exemplary embodiment of the disclosure for implementing dynamic range compression.It, can referring to Fig. 8
It is arranged two groups of audio frequency parameters (low temperature DRC and room temperature DRC), the DRC algorithm parameter for including in every group of audio frequency parameter is different, generally
So that the correspondence loudness of two groups of audio frequency parameters is identical, wherein the DRC algorithm parameter of normal mode (room temperature mode) to voltage not into
Row inhibits, or inhibits seldom；The DRC algorithm parameter of power limit mode (low temperature mode) inhibits maximum voltage.
According to an exemplary embodiment of the present disclosure, electronic equipment can be the mobile devices such as mobile phone.Mobile phone can be by built-in
Thermistor automatic detection for temperature.When temperature is reduced to a certain setting value (such as 0 DEG C) or battery parameter trigger threshold, if
It is played out, then ingoing power unrestricted model, is called according to battery parameter, temperature and broadcasting content different by loudspeaker
Audio frequency parameter can close part hardware module under specific circumstances.For example, when parameter has been set to minimum output power, but
When can not still cell voltage be made to be restored to desired voltage values, the mode for closing hardware (boost module) be taken to reduce current drain.
In addition, if the temperature detected by thermistor (such as 10 DEG C or more) and battery shape in the normal temperature range
When state normal (for example, internal resistance when internal resistance is reduced to room temperature), if played out using loudspeaker, enter normal mode,
I.e. the audio processor of mobile phone calls normal audio parameter.
Although in the above manner, be output to loudspeaker signal amplitude (for example, output gain variation range) reduce,
For signal after handling above, the sense of hearing volume of the sound played out is close or identical with original sound volume.In addition, due to signal width
Degree reduces, and consumption electric current, power reduce, therefore loudspeaker plays intermittent problem and improved.
It according to an exemplary embodiment of the present disclosure, as shown in figure 9, can be according to temperature setting multiple groups audio frequency parameter.It can be to low
Frequently (being lower than preset frequency), signal carries out gain reduction, and temperature is lower, reduces more, and similar, temperature is lower, maximum also sound
The inhibition of amount is more.Fig. 9 shows room temperature frequency response, -10 DEG C of frequency responses (low frequency reduces 4dB), -20 DEG C of frequency responses
The curve of (low frequency reduces 6dB).A frequency response curve in multiple frequency response curves can be selected according to temperature.In addition,
If temperature does not reach the temperature that can influence speaker performance, it is less (for example, most to can choose frequency response change
It is few) curve, with reduction " sharp " sound.
Figure 10 shows the flow chart of control method according to the exemplary embodiment of the disclosure.
As shown in Figure 10, in step 201, audio is played by loudspeaker.In step 202, every time T detecting state
(for example, internal resistance of cell value, battery temperature value, cell output value, the ambient temperature value of electronic equipment and/or inside battery
Consume performance number).In step 203, judge whether internal resistance is greater than predetermined internal resistance value or whether voltage change is greater than predetermined variation
Value executes step 205, otherwise executes step when internal resistance is no more than predetermined internal resistance value and voltage change is not more than predetermined variation value
Rapid 204.In step 204, judge whether battery temperature is lower than predetermined temperature, when battery temperature is lower than predetermined temperature, executes step
Rapid 205, otherwise return step 202.In step 205, judge whether volume is greater than limitation output volume, exports sound when being greater than limitation
When amount, step 206 is executed, otherwise return step 202.In step 206, judge that broadcasting content (including is judged by play mode
Broadcasting content), when broadcasting content is the tinkle of bells, execute step 207；When broadcasting content is voice content, step 209 is executed；
When broadcasting content is multimedia content, step 210 is executed.In step 207 and step 208, dynamic range compression is successively executed
With the frequency response adjustment based on balanced device.In step 209, the frequency response adjustment based on balanced device is executed.In step 210,
Execute dynamic range compression.In step 211, judge whether by parameter adjust (for example, dynamic range compression algorithm and/or
The parameter of weighing apparatus adjusts) it not can guarantee volume still less than limitation output volume or can not still power be made to reach predetermined power, if
It is to then follow the steps 212, it is no to then follow the steps 202.In step 212, by closing hardware (for example, boost module), to make
Loudspeaker exports sound without boost module, and the sound to guarantee loudspeaker output is not intermittent.
Figure 11 shows the block diagram of electronic equipment according to the exemplary embodiment of the disclosure.
As shown in figure 11, electronic equipment according to the exemplary embodiment of the disclosure can include: judging unit 310 is used for
Judged whether to need to limit raising for electronic equipment according to the ambient temperature value of the battery parameter value of electronic equipment and/or electronic equipment
Sound device function；Power limiting unit 320, for when needing limiting loudspeaker power, according to broadcasting content, limiting loudspeaker function
Rate.
As an example, battery parameter value includes: internal resistance of cell value, battery temperature value, cell output value, and/or electricity
Pond internal consumption performance number, and/or,
Broadcasting content includes: the content of announcement of voice content, multimedia content, and/or electronic equipment, and/or,
Whether the judging unit needs limiting loudspeaker power by following operation judges: when the variation of battery parameter value
When being lower than predetermined temperature value more than predetermined variation value and/or battery temperature value or ambient temperature value, judge whether to need to limit to raise
Sound device power, and/or, it determines and is exported with a corresponding limitation in battery parameter value, ambient temperature value and battery temperature value
Volume；Judge whether reach limitation output volume corresponding with described one for the broadcast sound volume of currently playing content；When reaching
When to limitation output volume corresponding with described one, judge to need limiting loudspeaker power, and/or,
The power limiting unit by operating limiting loudspeaker power as follows: the frequency changed for broadcasting content is rung
It answers；And/or dynamic range compression is carried out for broadcasting content, and/or,
The power limiting unit is also used to: the boost module of the power amplifier of mute speaker, and/or when battery electricity
When pressure value is not within the scope of scheduled voltage, increase the limited amplitude of power of loudspeaker, and/or,
The electronic equipment further include: detection unit, for predetermined time interval, detecting described one and/or described
Power limiting unit is also used to, and when described one in preset normal range (NR), stops power of loudspeaker limitation.
As an example, the power limiting unit is directed to the frequency response of broadcasting content by following operation change: reducing
The frequency response within the scope of first frequency of broadcasting content, and/or improve the frequency within the scope of second frequency of broadcasting content
Rate response, and/or the audio signal in third frequency range of broadcasting content is filtered out, and/or,
The power limiting unit carries out dynamic range compression by operation as follows: compressing the audio signal of broadcasting content
Dynamic range, and/or,
The power limiting unit stops power of loudspeaker limitation by behaviour as follows: restoring to ring for the frequency of broadcasting content
It answers, and/or stops the dynamic range compression for being directed to broadcasting content, and/or open the boost module of the power amplifier of loudspeaker.
As an example, the power limiting unit is also used to: while changing frequency response, making the output of broadcasting content
Volume remains unchanged, and/or changes frequency of the degree than being directed to big battery temperature value for the frequency response of baby battery temperature value
Response change degree is big, and/or changes the smallest scheme of degree using the frequency response in multiple frequency response change schemes,
And/or
The power limiting unit is also used to: while carrying out dynamic range compression, making the output volume of broadcasting content
It remains unchanged, and/or is directed to the dynamic range of big battery temperature value greatly for the dynamic range compression degree of baby battery temperature value
Compression degree is big, and/or,
First frequency range is less than 1 kHz, and second frequency range is greater than or equal to 3 kHz and is less than or equal to
8 kHz and/or third frequency range are less than 1 kHz.
Certainly, shown in Figure 11 other than unit, electronic equipment can also have other units, it may for example comprise but it is unlimited
In display unit, storage unit, processing unit etc., the disclosure is without limitation.
It should be understood that the specific implementation of the electronic equipment of an exemplary embodiment of the present invention can refer to the above needle
The related specific implementation of control method description is realized, details are not described herein.
In accordance with an alternative illustrative embodiment of the present invention, providing a kind of includes at least one computing device and at least one
The system of the storage device of store instruction, wherein described instruction promotes described when being run by least one described computing device
At least one computing device executes control method as described above.
In accordance with an alternative illustrative embodiment of the present invention, a kind of computer readable storage medium of store instruction is provided,
Wherein, when described instruction is run by least one computing device, at least one described computing device is promoted to execute as described above
Control method.
Computer readable storage medium is the arbitrary data storage device that can store the data read by computer system.Meter
The example of calculation machine readable medium recording program performing includes: read-only memory, random access memory, CD-ROM, tape, floppy disk, light number
According to storage device and carrier wave (such as being transmitted through wired or wireless transmission path by the data of internet).
Moreover, it should be understood that each unit of electronic equipment according to an exemplary embodiment of the present invention can be implemented hardware
Component and/or component software.Those skilled in the art's processing according to performed by each unit of restriction, can be for example using existing
Field programmable gate array (FPGA) or specific integrated circuit (ASIC) Lai Shixian each unit.
In addition, control method according to an exemplary embodiment of the present invention may be implemented as in computer readable storage medium
Computer code.Those skilled in the art can realize the computer code according to the description to the above method.Work as institute
It states computer code and is performed the realization above method of the invention in a computer.
Although having show and described some exemplary embodiments of the invention, it will be understood by those skilled in the art that
It, can be to these in the case where not departing from the principle and spirit of the invention defined by the claims and their equivalents
Embodiment is modified.
Claims (10)
1. the control method of a kind of electronic equipment, wherein the control method includes:
Judge whether to need to limit electronic equipment according to the ambient temperature value of the battery parameter value of electronic equipment and/or electronic equipment
Power of loudspeaker；
When needing limiting loudspeaker power, according to broadcasting content, limiting loudspeaker power.
2. control method according to claim 1, wherein
Battery parameter value includes: internal resistance of cell value, battery temperature value, cell output value, and/or inside battery consumption power
Value, and/or
Broadcasting content includes: the content of announcement of voice content, multimedia content, and/or electronic equipment, and/or
Judge whether that the step of needing limiting loudspeaker power includes: according to battery parameter value and/or ambient temperature value
When the variation of battery parameter value is more than that predetermined variation value and/or battery temperature value or ambient temperature value are lower than predetermined temperature
When value, judge whether to need limiting loudspeaker power, and/or
It determines and a corresponding limitation output volume in battery parameter value, ambient temperature value and battery temperature value；Judgement pair
Whether reach limitation output volume corresponding with described one in the broadcast sound volume of currently playing content；When reaching and described one
When corresponding limitation output volume, judge to need limiting loudspeaker power, and/or
According to broadcasting content, the step of limiting loudspeaker power, includes:
Change the frequency response for being directed to broadcasting content；And/or
Dynamic range compression is carried out for broadcasting content, and/or
According to broadcasting content, the step of limiting loudspeaker power further include:
The boost module of the power amplifier of mute speaker, and/or
When battery voltage value is not within the scope of scheduled voltage, increase the limited amplitude of power of loudspeaker, and/or
The control method further include:
With predetermined time interval, described one is detected, and/or
When described one in preset normal range (NR), stop power of loudspeaker limitation.
3. control method according to claim 2, wherein
Changing the step of frequency response for being directed to broadcasting content includes: the frequency within the scope of first frequency for reducing broadcasting content
Response, and/or improve broadcasting content the frequency response within the scope of second frequency, and/or filter out broadcasting content in third
Audio signal in frequency range, and/or
The step of carrying out dynamic range compression for broadcasting content includes: the dynamic range for compressing the audio signal of broadcasting content,
And/or
Stopping the step of power of loudspeaker limits includes:
Restore the frequency response for being directed to broadcasting content, and/or
Stop the dynamic range compression for being directed to broadcasting content, and/or
Open the boost module of the power amplifier of loudspeaker.
4. control method according to claim 3, wherein
Change the step of frequency response for being directed to broadcasting content further include: while changing frequency response, make broadcasting content
Output volume remains unchanged, and/or changes degree than for big battery temperature value for the frequency response of baby battery temperature value
Frequency response change degree is big, and/or changes the smallest side of degree using the frequency response in multiple frequency response change schemes
Case, and/or
The step of carrying out dynamic range compression for broadcasting content further include: while carrying out dynamic range compression, make to play
The output volume of content remains unchanged, and/or is directed to big battery temperature for the dynamic range compression degree ratio of baby battery temperature value
The dynamic range compression degree of angle value is big, and/or
First frequency range is less than 1 kHz, and second frequency range is greater than or equal to 3 kHz and is less than or equal to 8,000
Hertz and/or third frequency range are less than 1 kHz.
5. a kind of system including at least one computing device He the storage device of at least one store instruction, wherein the finger
It enables when being run by least one described computing device, at least one described computing device is promoted to execute as in claims 1 to 4
Any claim described in control method.
6. a kind of computer readable storage medium of store instruction, wherein when described instruction is run by least one computing device
When, promote at least one described computing device to execute the control method as described in any claim in claims 1 to 4.
7. a kind of electronic equipment, wherein the electronic equipment includes:
Judging unit, for judging whether need according to the battery parameter value of electronic equipment and/or the ambient temperature value of electronic equipment
Limit the power of loudspeaker of electronic equipment；
Power limiting unit, for when needing limiting loudspeaker power, according to broadcasting content, limiting loudspeaker power.
8. electronic equipment according to claim 7, wherein
Battery parameter value includes: internal resistance of cell value, battery temperature value, cell output value, and/or inside battery consumption power
Value, and/or
Broadcasting content includes: the content of announcement of voice content, multimedia content, and/or electronic equipment, and/or
Whether the judging unit needs limiting loudspeaker power by following operation judges:
When the variation of battery parameter value is more than that predetermined variation value and/or battery temperature value or ambient temperature value are lower than predetermined temperature
When value, judge whether to need limiting loudspeaker power, and/or
It determines and a corresponding limitation output volume in battery parameter value, ambient temperature value and battery temperature value；Judgement pair
Whether reach limitation output volume corresponding with described one in the broadcast sound volume of currently playing content；When reaching and described one
When corresponding limitation output volume, judge to need limiting loudspeaker power, and/or
The power limiting unit by operating limiting loudspeaker power as follows:
Change the frequency response for being directed to broadcasting content；And/or
Dynamic range compression is carried out for broadcasting content, and/or
The power limiting unit is also used to:
The boost module of the power amplifier of mute speaker, and/or
When battery voltage value is not within the scope of scheduled voltage, increase the limited amplitude of power of loudspeaker, and/or
The electronic equipment further include:
Detection unit, for predetermined time interval, detecting described one, and/or
The power limiting unit is also used to, and when described one in preset normal range (NR), stops power of loudspeaker limitation.
9. electronic equipment according to claim 8, wherein
The power limiting unit is directed to the frequency response of broadcasting content by following operation change: reduce broadcasting content the
Frequency response in one frequency range, and/or the frequency response within the scope of second frequency of broadcasting content is improved, and/or filter
Except the audio signal in third frequency range of broadcasting content, and/or
The power limiting unit carries out dynamic range compression by operation as follows: compressing the dynamic of the audio signal of broadcasting content
Range, and/or
The power limiting unit stops power of loudspeaker limitation by behaviour as follows:
Restore the frequency response for being directed to broadcasting content, and/or
Stop the dynamic range compression for being directed to broadcasting content, and/or
Open the boost module of the power amplifier of loudspeaker.
10. electronic equipment according to claim 9, wherein
The power limiting unit is also used to: while changing frequency response, remain unchanged the output volume of broadcasting content,
And/or change degree than the frequency response change degree for big battery temperature value for the frequency response of baby battery temperature value
Greatly, and/or using the frequency response in multiple frequency response change schemes change the smallest scheme of degree, and/or
The power limiting unit is also used to: while carrying out dynamic range compression, keeping the output volume of broadcasting content
It is constant, and/or it is directed to for the dynamic range compression degree of baby battery temperature value the dynamic range compression of big battery temperature value greatly
Degree is big, and/or
First frequency range is less than 1 kHz, and second frequency range is greater than or equal to 3 kHz and is less than or equal to 8,000
Hertz and/or third frequency range are less than 1 kHz.
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